Bobbinet-making machine



0. SEEBERGERL BOBBINETJMAKING MACHINE. AFPL ICATION. FILED APR .13,I921.

Patented July 4, 1922.

OTHIVIAB SEEBERGER, OF BBUGG, SWITZERLAND.

BOBBINET-MAKING MACHINE.

that, for the purpose of producing the initial movement of the bobbinwhen the latterchanges its place, a considerable amount of power must betransmitted for this purpose through the pattern mechanism. This results in irregularities in, and even stoppages of,'the work.

In particular. this places a great strain upon the pattern cards whichhave to be re-- 'newed very frequently.

Further the constructions hitherto known have the further disadvantagethatvat the beginning and at the end of their change of place thebobbins have to be pushed into and moved out of the race or track byspecial devices. In this matter the feet of the bobbins are frequentlyjammed or the knock against one another as a result of inaccurateadjustment of the actuating parts. thus en tailing many repairs, andthereby causing the machine to remain idle for an excessive length oftime. a

Such interruptions are rendered iinpossi" ble by the present inventionwhereby the pattern mechanism is not required to impart motion to thebobbins, and therefore no devices are necessary for inserting thebobbins into the race or track.

The movement of the bobbinsis effected by discs which run selectivelyand which.

'in their turn, are coupled directly to the driving wheels that aremounted underneath, and are automatlcally uncoupled again there fromafter a partial revolution.

A constructional example of this invention is illustrated by way ofexample in the ac companying drawings in which- Fig. 1 is an elevation,and

Fig. 9. is a view of the raceway when arranged in a straight line.

Fig. 3 is a section through a hohhin stem.

Specification of Letters Patent.

Application filed April 13, 1921. Serial No. 460,884.

Fig. 4 is a side elevation of an under-part ofa disc, and

Fig. 5 is a plan of a bar.

The exact shape of the disc is shown in Fig. 6 which is a partial plan.

As shown in Fig. 3, the driving wheel a rotates around the stationarystem b. In the extended hub of the driving wheel a there is mounted inan axially slidable manner a clutch pin 0, which is parallel to the axisof the driving wheel a. and around which is arranged a coiled spring (Z.This spring (Z bears at one end against the wheel a and at its other endagainst a pin 6 that extends transversely through the aforesaid clutchpin 0. Below the pin e is a second pin f which extends parallel to thepin 6 through the clutch pin 0. In the hub of the driving wheel there isfurther mounted in a radially slidable manner a bar g. The outer end ofthis bar is formed with a truncated double bevel as shown in Fig. 5.

The double beveled bar 9 is formed at its upper end with a groove h. Inan inwardly extending recess in the bar 9 there is arranged a spring 2'which has a tendency to push the said bar outwards.

The clutch pin 0 extends freely through a transverse slot g of the bar 9in such a manner as not to hinder the radial move ment of the said barg. The bar g is held in its inner locking position by the engage ment ofthe ends of the pin 7 in recesses g of the bar 9.

71: is a nib provided on the hub of the wheel diametrically opposite thebar 5/.

m are the discs which are situated in the upper plate Z and which areadapted to rotate freely around their stems Z).

The height of the discs in is exactly equal to the thickness of the topplate Z. The discs m may have the same diameter throughout their entireheight, or they may be so formed and arranged that each pair of adjacentdiscs will engage in or over one another by means of their projectingedges.

Each disc m has further two diametrically opposite recesses n,(Fig. 6)which are so shaped as to be adapted to determine the path of the bobbin0. and so that the noses :0, formed by the recesses n in the discs arecaused to act as drivers for the bobbins.

Below the disc m and fixed to it, is a flange 9 formed with twodiametrically op-- posite radially extending lugs shown in sideelevation in Fig. 4.

In the flange there is formed a small depression 1" into which, 'for'thepurpose of accurately stopping the disc m, a nib provided on a spring 8,is caused to snap bythe pressure of a spring 5.

Inthe low'r discthereis arranged a pin '0 which is guided by means of asleeve u,

and which can be raised and lowered in'the usual; mannerby meansot apattern mecha- 'nism, whereby the said pin imparts its movements to theringw, that is fixed on the pin 1 1., The manner of operation is asfollows If for instance the bobbins v0 and O Se ig. 1 and 2) are tochange over so that moves over to O and 0 moves over to 7 OH thepin eand with it the ring 10 will be raised by'the pattern mechanism in the Iusual manner.

The ring 10 presses the rod 0 upwards,

Jandsince the wheels a are continuously rotatmg around the stems b, therod 0 sit- 'uated on the wheel a will 1n its raised position (indicatedin dotted lines in Fig. 3)

transmit, by-pressure upon one one of the.

lugs g, rotary II10t1OI1 to the disc 11 V In the rotation of the disc,the noses m, 00,

carry the'bobbins O and 0 round with them.

,,,In order, however, that the rotary motion of the discs shall beaccurately limited, the

further above described means are provided. lnralsing the rod 0 and withit the pin 6, the spring Z isstressed, and as soon as the clutch pin 0has been raised to such a height that the pin has come level with thegroove Z2, the pressure of the spring 1' will cause the bar 9 to shootoutwards,so that the pin 7 bears againstthe bottom of the groove 71,

and the clutch pin 0 can not move down.

So longas this position continues, the coupling between the wheel aandthe disc m is maintained, and the disc m- ,will revolve withthe'wh'eel a". After almost one completed half revolution the bar 9 willstrike 'the spring (Z,'to drop back into its position vof rest.

By this means thepressure upon the lug ceases, and the disc ceases torotate. In order that the rotation of the disc shall cease exactly atthe proper moment, the nib situated on the springs snaps into thecorresponding recess 7" of the flange y) and thus holds'thefflange 79and through it the disc m fast-.-

During the half revolution the bobbins O and 0 have changed places; andthe bobbins remain, midway between every two adjacent discs; that is tosay, they are not moved out of the race or track as hitherto.lonsequently no devices of any kind are necessary in order to move thebobbins back into the race 'or track, and therefore the strain on thepattern mechanism which is required for this purpose in other bobbinetmaking machines, is absent, thus allowing of a considerable saving inwear and tear-qt the saidmechanism.

What I claim is -1 1. A bobbinet making machine of thekind described,comprising a stationary stem, a drive wheel rotatably mounted on saidstationary stem, a clutch pin axially slidable in the drive wheel andturning with the same,

. a pattern mechanism to control the upward movement of the clutch pin,a spring tocontrol the downward movement of the clutch pin, a springpressed bar radially slidable in the drive wheel and capable of lockingthe clutch pin .in the raised position and of being locked in the innerposition by the clutch pin, a projection provided on the drive wheeldiametrically opposite thebar, a disc adapted to rotate freely aroundthe said stem and-having recesses forming noses to drive the bobbins andhaving also two. diametrically opposite radially extendinglugs capableof being engaged by thelclutch pin and means for accurately and.yieldingly stopping the disc.

2. rt bobbinet making machine, comprisin a stationary stem, a drivewheel rotatably mounted on said stationary stem, a clutch pinaxiallslidable inthe drive wheel and turning wit the same, a patterninechanismto control the upward movement of the clutch pin, a spring to controlthe downward movement of the clutch pin, a spring pressed'bar radiallyslidable in the drive a wheel and having a transverse slot to receivethe clutch pin, a horizontal groove to support apart of the clutch pinin its raised position, vertical recesses to receive the said partof theclutch pin and a double beveled V outer end, a projection provided onthe drive wheel diametrically opposite the bar, a disc adapted to rotatefreely around the said stem and having recesses forming noses to drivethe bobbins and having also two diametrically opposite radiallyextending lugs capable of being engaged by the clutchpin and means foraccurately and yieldingly stopping the disc. v

3. A bobbinet making machine of the kind described, comprising astationary stem, a drive wheel rotatably mounted on said stationarystem, a clutch pin axially slidable in the drive wheel and turning withthesame, a pattern mechanism; to control the upward movement of theclutch pin, a spring to control the downward movement of the clutch pin,a spring pressed bar radially slidable in the drive wheel and capable oflocking the clutch pin in the raised position and of be ing locked inthe inner position by the clutch pin, a projection provided on the driveWheel diametrically opposite the bar, a disc adapted to rotate freelyaround the said stem and carrying a flange having recesses forming nosesto drive the bobbins and also two diametrically opposite radiallyextending lugs capable of being engaged by the clutch pin and a springcoacting With a de- 10 pression in the said flange to accurately andyieldingly stop the disc.

In testimony whereof I have aflixed my signature in the presence of twoWitnesses. OTHMAR SEEBEBGER. Witnesses:

CHR. MILLIEN, HERMAN HUBER.

